What kind of Redline Synthic oil do I use the transmission and final drive? I have 6k coming up
I happen to change oil in the transmission and rear end every 6k just like the engine oil. Guess what? One quart takes care of the rear and and the tranny with nothing left over. Imagine that!!old1951 said:I run Mobil 1 Synthetic 75W-90 (GL-5) gear oil as recommended in the Paul Sayegh service videos since 6K miles (at 42K now). I do a rear drive oil change with every engine oil change (6K instead of 12K as recommended) and the transmission at 12K per BMW recommendation. Dont' be shocked if your first 6K change looks pretty bad (black color and with a lot of debris on the magnet)! This is pretty typical. Mine was that way and I freaked out, what with all the rear drive failure talk. Started the 6K change so I could keep an eye on things. The drive oil has looked great ever since I started the 6K cycle (still amber and clear). It only takes 230 cc of oil (less than a 1/4 of a quart) so I recommend changing every 6K since one quart will make 4 changes! At $7-9 quart, that seems like real cheap insurance to me.